20 count Mosquito Dunks. As each Mosquito Dunk® slowly dissolves, it releases a Bacillus thuringiensis subspecies israelensis (Bti) which is toxic to all species of mosquito larvae but harmless to other living things. Use biodegradable Mosquito Dunk® in water troughs, koi ponds, birdbaths, rain barrels, animal watering troughs, elevator shafts, or any place where water collects and remains for periods of time. Each Mosquito Dunk® will effectively treat 100 square feet of surface water for 30 days or more. For less water, a portion of a Mosquito Dunk® can be used. Homeowners, ranchers and farmers looking for a safe, nontoxic way to control mosquitoes can use Mosquito Dunks®, which kill mosquitoes before they can become flying, biting, disease-carrying adults. Commercial card contains 20 Mosquito Dunks.
- Kills all species of mosquito larvae
- Non toxic to other living things
- Easy to use - just float in standing water